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Application of Ionosphere Correction for Enhanced Multi-GNSS Positioning

机译：电离层校正在增强多GNSS定位的应用

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Currently, the GNSS (Global Satellite Navigation System) and the RNSS (Regional Satellite Navigation System) consist of GPS, GLONASS, BeiDou, Galileo, IRNSS, SBASs, and QZSS. Collectively, the components of GNSS and RNSS are referred to Multi-GNSS. One of the advantages of using Multi-GNSS signals is improvement of poor satellite geometry in severe conditions, such as in urban canyons. However, multipath is a major source of error in GNSS range measurements, and position accuracy is extremely degraded by multipath as well as poor satellite geometry in urban canyons. Therefore, multipath detection algorithm is necessary for precise positioning with multiple GNSS signals. There has been discussion about detection of the multipath effect by using signal strength and residuals. However, these conventional methods are indirect measures of signal quality, not visual monitors. To overcome these problems, a more direct way of detecting the multipath effect is needed. This paper proposes an enhanced method of detecting multipath effect by using a geometry-free combination applied with high-accuracy ionosphere correction. We found that the proposed method is more effective for code relative positioning, however QZS Klobuchar parameters are necessary.
机译：目前，GNSS（全球卫星导航系统）和RNSS（区域卫星导航系统）包括GPS，GLONASS，北斗，伽利略，IRNSS，SBASs和QZSS的。总的来说，GNSS和RNSS的组件被称为多GNSS。对使用多GNSS信号的优点之一是在苛刻的条件，例如在城市峡谷改善卫星几何差。然而，多径误差的GNSS测量范围内的主要来源，并且位置精度非常受多径，以及在城市峡谷卫星几何差降低。因此，多路径检测算法是必要的多个GNSS信号精确定位。已经有关于检测的使用信号强度和残留的多径效应的讨论。然而，这些常规方法是信号质量的间接测量，而不是视觉显示器。为了克服这些问题，需要一种检测多路径效应的更直接的方式。本文提出的通过使用具有高精确度的电离层校正施加的几何无关组合检测多路径效应的增强方法。我们发现，该方法是代码的相对定位更有效，但是QZS Klobuchar参数是必须的。

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